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309590 — NUT,SELF-LOCKING,PLATE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

309590: NUT,SELF-LOCKING,PLATE.

The NUT,SELF-LOCKING,PLATE is a the manufacturer industrial component. Key specifications include material: IRON ALLOY 660 NUT, nut_style: PLATE, nut_height: 0.396 INCHES MINIMUM AND 0.411 INCHES MAXIMUM IN, nut_length: 1.266 INCHES MINIMUM AND 1.296 INCHES MAXIMUM IN, plate_width: 0.485 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN, thread_class: 3B. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-571-0804, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
309590
NSN: 5310-00-571-0804
FSC: 5310 — Nuts and Washers
CAGE: 11449 — TURBO POWER & MARINE SYSTEM INC SUB OF UNITED TECHNOLOGIES CORP (USA)
SPECIFICATIONS
materialIRON ALLOY 660 NUT
nut_stylePLATE
nut_height0.396 INCHES MINIMUM AND 0.411 INCHES MAXIMUM IN
nut_length1.266 INCHES MINIMUM AND 1.296 INCHES MAXIMUM IN
plate_width0.485 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN
thread_class3B
thread_seriesUNF
locking_featurePREVAILING TORQUE ALL METAL DESIGN
plate_thickness0.029 INCHES MINIMUM AND 0.039 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
precious_materialSILVER
surface_treatmentSILVER OVERALL
NSN5310-00-571-0804
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 309590 · OEM ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
PLATE THICKNESS: 0.029 INCHES MINIMUM AND 0.039 INCHES MAXIMUM IN
•
NUT LENGTH: 1.266 INCHES MINIMUM AND 1.296 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: AMS 2410 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
•
THREAD SERIES: UNF
•
PRECIOUS MATERIAL: SILVER
•
PLATE WIDTH: 0.485 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5510 ASSN STD SINGLE MATERIAL RESPONSE SHELL
TECHNICAL CHARACTERISTICS
PLATE THICKNESS0.029 INCHES MINIMUM AND 0.039 INCHES MAXIMUM IN
NUT LENGTH1.266 INCHES MINIMUM AND 1.296 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONAMS 2410 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
THREAD SERIESUNF
PRECIOUS MATERIALSILVER
PLATE WIDTH0.485 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5510 ASSN STD SINGLE MATERIAL RESPONSE SHELL
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5732 ASSN STD SINGLE MATERIAL RESPONSE NUT
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.250 INCHES IN
OTHER ITEMS IN FSC 5310 — Nuts and Washers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5310-00-000-0040 5310-00-000-0077 5310-00-000-0079 5310-00-000-1146 5310-00-000-3815 5310-00-000-4532 5310-00-000-4540
SUBSTITUTES & CROSS-REFERENCES 1
ZA1W2860S048Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 309590?
309590 is a NUT,SELF-LOCKING,PLATE.
What parts can replace 309590?
There is 1 known substitute for 309590: ZA1W2860S048. Substitute compatibility should be verified for your specific system.
What is the NSN for 309590?
309590 is cataloged in the U.S. Government catalog under NSN 5310-00-571-0804. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.